Shares in TDC, which had said on Thursday that NTC would sell 80 million shares, were down 2.3 percent at 40.02 crowns at 1219 GMT.

NTC, which bought 89 percent of TDC in 2005, sold a 28.8 percent stake for around $2.2 billion in one of the biggest share offerings of 2010. NTC has since cut its stake several times. ($1 = 5.5719 Danish crowns) (Reporting by Johan Ahlander; Editing by Dan Lalor)